Improvement in addometers



L. N. NUTZ.

Calculator.

Patented Aug. 17, 1858.

M T/M35155 //v VENTGF UNITED STATES PATENT EEicE.

LEONARD X. NUTZ, OF ALTON, ILLINOIS, ASSIGXOR TO IRWIN B. HANDLE ANDELIAS HIBBARD.

IMPROVEMENT IN ADDOMETERS.

Specification forming part of Letters Patent No. 21,236, dated August17, 1858.

Alton, in the county of Madison and State of Illinois, have invented anew and useful lilachine for Adding Numbers, called The Addegraph, and Ido hereby declare that the following is a full, clear, and exactdescription of the construction and operation of the same, referencebeinghad to the annexed drawings, making a part of this specification.

Figure 1 is a perspective view of the whole machine with the topremoved.

D is an adjustable shaft with one or more feather-keys thereon for thepurpose of clutching and giving motion to the block of the indicatorcorresponding with the column you wish to add.

0 C C are the indicators, which are endless chains passing over twosquare blocks and numbered on the separate links from O to 0, as on thewheels in other counting-machines. At intervals of every ten links is apin 1) for the purpose of operating on the lever E, which in turn actsupon another pin on therearsidc of the next indicator and moves itforward one link for every ten links that indicatorthe next precedinghas been moved.

In Fig. 3 it maybe seen how the pin 1) coming in contact with theprojection q near the end of the lever E 'ouid bear down the end of saidlever, and this, acting on the pin of the next chain, would press thatdown and thus move it forward one link.

The other parts of the machine by which the keys are made to give motionto the indicaters have no essential novelty, and may be varied as inother machines for like purposes; but the blocks 13 (see Fig. i) are allperforated with a round orifice large enough to allow the shaft D topass through them, and grooves or slots are also cut in the block toreceive the feathers on the shaft, which give motion to the block whenthe shaft turns.

It will be seen from the above that my invention relates to that classof machines which are used for making and registering the additions oflong columns of figures by means of movable indicators acted upon bykeys of a fin ger-board; and it consists inthe arrangement andcombination of the shaft D, the blocks B, the indicators 0, and thelevers E, whereby each key communicates a proper and known motion toeither of the indicators at the will of the operator, and the result isaccurately registered by the indicator corresponding to the columnwherein the addition is being made.

The operation of the machine is as follows: The endless chains beingarranged with the ciphers opposite the opening in the cover and theshaft D being adjusted so as to clutch the block 13 of the indicatorcorresponding with the column of units, the key which corresponds to thefirst figure in the unit-column is depressed as far as it will go, thenthat one corresponding to the second figure, and so on through thecolumn of units. Each time a kcyis depressed the endless chaincorresponding to the units-column will be moved forward a distancecorresponding to the number of the key depressed, and every time ten iscounted on this chain a projection on the side of it operates a lever,which in turn presses on a projection on the side of the next chain,which is thereby fed forward one number for every ten in theunit's-column. \Vhen the addition of the column of units is completed,the catch K is lifted from the shaft D and the shaft pushed in, so as toclutch the block B of the indicator of the column of tens. The catch Kis then let down again in the next notch of the shaft D. The indicatorof the column of tens is then in gear with the keys of the finger-board,and the addition of this column is proceeded with in like manner to thatof the column of units, the indicator of hundreds being advanced one forevery ten of the indicator of tens. By thus continuing to change theconnection between the shaft D and the indicators from the onecorrespond ing to the column where the addition is completed to the nextfollowing any number of columns may be added up and registered by theuse of the same set of keys.

I am aware that machines with a series of circular indicators and acorresponding number of set of keys have been made to'effect the samepurpose; but in these there were no means of connecting or disconnectingat pleas are the keys and the several wheels, so as to make the same setof keys register in turn of keys, substantially as above described, forthe additions of the several columns. I therethe purpose of enabling theoperator to add fore do not claim, broadly, registering the reup andregister any number of columns of sult of the additions of figures incolumns by figures in succession by means of the same means of movableindicators acted upon by set of keys.

the keys of a finger-board; but LEONARD N. NUTZ.

WVhat I do claim as new is Witnesses: The feathered shaft D, Whencombined and J. B. HANDLE, J11,

arranged with a series of indicators and a set JOHN A. MOXEY.

